Improvement in presses for striking up metal



J.NORTH., PRESS FOR STRIKING UP METAL.

No. 51,960. Patented Jan. 9; 1866.

Val/wise;- W a awaa/ q j JOHN NORTH, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN PRESSES FOR STRIKING UP METAL.

Specification forming part of Letters Patent .No. 513960, dated Janua'iy9, 1866.

To all whom it may concern- Be it known that I,JOHN NORTH,of Brooklyn,in the county of Kings and State of New York, have invented a new andImproved Press or Machine for Raising Metal; and I do hereby declarethat the following is a full,

clear, and exact description thereof, which will enable others skilledin the art to make and use the same, reference being bad to the ac=companyingf drawings, forming'part of this specification.

The principal object of the present invention is. tolho-ld the metalplate in such a manner while being struck or raised up by the punch ordie used that the portion of the metal sorai'sed shallbe perfectly freefrom all creases or wrinkles and of an even and smooth surface for itswhole extent, both upon its outside and inside; and it consists inholding the edge or edges of the metal plate by and between a fixedcollarof the machine and a movable hollow plug or shaft, so arranged andoperated with regard to the said collar that when the plate has beenproperly placed or inserted upon theupper end of the shaft it (theshaft) shall then be made to travel up and toward the fixed collar,bringing the edgeof the plate up and against the same, where it is heldwith sufficient tightness and pressure that as it is drawn or pulled outtherefrom by the punch or die used, which is then brought to bearagainst it for raising or striking up, no wrinkles or creases shall beformed thereon, its raised surface being even and smooth throughout itswhole extent, both upon its inside and outside, the hollow shaft, afterthe punch has thus performed its work, being then made to travel awayfrom the fixed collar, carrying with it the so struck-up metal plate,while at the same time the punch is withdrawn and a suitably-shapedfollower or ejector arranged upon the inside of the hollow shaft broughtto bear against the plate for throwing it out or ejectin git from thesame, when the machine or press is ready for another similar operation,first, however, having placed another metal plate within the same, asbefore described.

The peculiar arrangement of mechanical devices by which theabove-described movements of the hollow plug, punch, and ejector areaccomplished will now be explained in detail, reference being bad to theaccompanying plate of drawings, of which- Figurehis an elevation of theback or rear side of the press or inalhine Fig. 2, a vertical sectiontaken in the plane of the line as m, Fig. 1; and Fig.3, a transversevertical section taken in the plane of the line :1] 3 ,Fig. 2.

A A in the drawings represent the framework of the machine or press,consisting of two upright parallel standards, B B, placed a shortdistance from. each other, and connected together by cross bars orbraces C O at suitable points thereof, the said'frame-work being made ofsufficient strength and of the proper metal to withstand the powerfulstrains to which they are subjected in striking up metal plates therein,as will be presently described.

D is the balance-wheel of the machine,

"placed in a verticalposition upon the outside of one of the standards13, and turning upon a shorthorizontal shaft, E, inserted therein,

upon the inner face of'which wheel, and revolving in conjunction with itupon its shaft E, is a small gear-wheel, F, interlocking by its teethwith the teeth 'of another and larger gear-wheel, G, the shaft H ofwhich extends across from one standard to the other, turning, insuitable bearings of the projecting portions L L thereof. The portion Mof this shaft H, between the two standards, is made ofa double-crankshape, on which is hung the upper end, N, of a connecting-rod, 0,passing threefrom and secured at its lower end, P, between its arms Q Qby a pivot, B, t.o the cam-shaped bar or plate-S, placed in a verticalposition and turning upon a hinge-joint, T, at its lower edge, of theadjustable set-screw or plug U inserted within the lower cross-bar, O,of the frame-work.

On the upper or cam edge of the plate 8 rests the rounded and lower endof a hollow plug or shaft, W, placed in avertical position and moving inthe cross guide-bar X of the standards, the upper end of which hollowplug has a raised lip or edge, a, entirely around the same, in which themetal plate which is to be struck or raised up is placed or laid, asshown in Fig. 3 at b.

Above the hollow plug, and a short distance therefrom in the samevertical plane, within the lower side of the cross-bar (l of thestandards, is inserted and fixed, in any suitable manner, a ring orcollar, Y, the lower surface of which, and extending entirely arounditsopening Z, is formed. with a raised edge or shoulder, 0, of such a shapeand size as to fit with vertical plane with the hololw shaft or plug W,and moving in and through the fixed collar Y and the upper cross-bar, Cof the standards. The lower end of this punch is made of a conical ortapering shape for a short distance of its length, corresponding towhich inshape, but of a little larger diameter, the upper end of thehollow plug is rimmed out or formed as plainly shown in Fig. l

Upon the back or rear side of the punclr shaft, between the cross-bar Oand the next lower one, 0 on which the collar Y is fixed, a toothedrack, B is-formed, with the teeth of which engage the teeth formed uponthe end -D of the crank-arm E of a transverse horizontal shaft, Fturning at each end in bearings of the standards 13 B, the outer end'otsaid crank-arm being connected through a vertical connecting-rod, G withthe oam-pla te or bar S, before referred to, by a, short vertical slot,H in the lower end of said rod moving upon and over a pin, L inserted inthe face of the cam-plate at or near its rear portion.

The operation of the machine, arranged as above described,is as follows:The metal plate which is to be struck or raised up is first placed uponthe upper end of the hollow plug or shaft W, as before explained, when,the balancewheel D being turned in the direction represented by a redarrow in the drawings, the

hollow plug, through the devices connectingit therewith, is made totravel up and toward the fixed collar, against which it brings the edgesof the said plate, where it is tightly held while the punch descends andacts against it, drawin g it out therefrom and raising or striking it'up into a form corresponding to it, the hollow plate thus struck orraised up in the same being first withdrawn orremoved,

To remove the plate from the press after having been struck up as aboveexplained, I insert within the hollow plug, and concentric therewith, aloose follower or ejector, 1,, under which, as the plug travels backfrom the fixed collar, the outer end of a curved-shaped arm, m, securedto the cam-plate moves, the said arm being of such a shape as to causethe said follower or ejector to be raised sufficiently within the hollowplug as to throw out the struckup plate in its upper end.

To adjust the pressure or tightness with which the metal plate is heldagainst the fixed collar, it is only necessary to raise or lowertheset-screw or plug to which the cam is hinged,

according as it is desired to have the pressure greater or lesser, as isevident without further explanation.

In Fig. 4 one end'of the cam-plate S is shown with a slot, r, in thesame, through which the pin of the connecting-rod G2 passes, whereby theleverage of the operating devices for the punch ordie upon it (thepunch)can beincreased or decreased at pleasure by simply setting thesaid pin farther from or nearer to the fulcrum of thecam-plate.

Having thus described my invention, I claim as new and desire to secureby Letters Patentl.- The combination of the stationary collar Y,-movableplugor shaft \V, cam S, and adjusting-screw U, all constructed,arranged, and operated in the manner set forth.

2. In combination with the above, the punch- A constructed and operatingas described.

3. Operating the punches A and W by means of the cam S, constructed andarranged substantially as described.

4. The cam-plate S, hollow plug or shaft provided with a follower orejector operated by. the curved arm of said cam, or its equivalent,arranged and connected together and with the driving-power used,substantially in the manner described, and soas to operate with regardto the fixed collar of the machine,

as and for the purpose specified.

The above specification of my invention signed by me this 18th day ofAugust, 1865.

JOHN NORTH. Witnesses:

.ALBERT W. BROWN, 0. L. TOPLTFF.

